feat: create `/extended/v2/burn-blocks/:height_or_hash/blocks` endpoi… #1900

Job	Run time
lint-docs	1m 0s
lint	1m 11s
test	4m 10s
test-2_5 (block-zero-handling)	1m 32s
test-bns-e2e	1m 52s
test-bns	1m 57s
test-btc-faucet	1m 29s
test-2_5 (faucet-stx)	1m 36s
test-2_5 (pox-4-btc-address-formats)	2m 16s
test-event-replay	1m 53s
test-2_5 (pox-4-delegate-aggregation)	1m 38s
test-rosetta	2m 2s
test-2_5 (pox-4-delegate-stacking)	1m 58s
test-rosetta-cli-construction	3m 14s
test-2_5 (pox-4-delegate-revoked-stacking)	2m 2s
test-rosetta-cli-data	2m 18s
test-2_5 (pox-4-stack-extend-increase)	1m 44s
test-rosetta-construction	1m 54s
test-2_5 (pox-4-rosetta-btc-addr-types)	4m 18s
test-rpc	1m 33s
test-2_5 (pox-4-rosetta-cycle-phases)	4m 28s
test-subnets	2m 42s
test-2_5 (pox-4-rosetta-segwit)	2m 5s
test-2_5 (pox-4-burnchain-stack-stx)	1m 39s
test-2_5 (pox-4-burnchain-delegate-stx)	1m 32s
build-publish	11m 58s
	1h 6m 1s

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